What number can be replaced with K to make this a function?
(-5,8) (4,9) (K, 9) (9,9)

A)-5
B)4
C)-9
D)9

C
-9 because a function is when an input has only one output
you don’t want to repeat the first numbers in the bracket
and there’s -5, 4 and 9 already so its -9